Vulcanizer



Oct. 2, 1934. v A, Q RHOADES 1,975,665

VULGANIZER I Filed Oct. l2, 1935 gmc/who@ Patented Oct. 2, 1934 UNITED STATES PATENT oFFiefs 4 Claims.

This invention relates to vulcanizing means and more particularly to a vulcanizer adapted for use with inner tubes which may be readily connected to a conventional storage battery such as the battery used in the operation of a motor vehicle engine.

An object of this invention is to provide a vulcanizer which includes means whereby the heat generated by the heating element is so concentrated as to provide the necessary heat for the vulcanizing of a patch o-n the tube.

The above and various other objects and advantages of this invention will in part be described and in part be understood from the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawing wherein:-

Figure 1 is a plan view of a vulcanizer constructed according to the embodiment of this invention.

Figure 2 is a sectional View taken substantially through the center of the vulcanizer and showing this vulcanizer in operative position with a conventional inner tube and clamp for holding the vulcanizer in operative position.

Figure 3 is an enlarged View with the cover of the vulcanizer removed and showing the circuit in which the vulcanizer is interposed.

Referring to the drawing wherein like numerals of reference designate corresponding parts throughout the views, the numeral designates generally a cylindrical housing which is open at the top and provided with a concave bottom 11. The housing 10 is provided interiorly with threads 13 and a truncated cone 12 provided with a cylindrical base portion 14 having peripheral threads is adapted to be removably engaged in the interior of the housing 1G. This truncated cone 12 is disposed in inverted position with the apex thereof downwardly and a nut member 15 is integral with the apex of the truncated cone 12 and extends downwardly therefrom in the direction of the bottom 11 of the housing 10.

A heating element in the form of a resistance coil 16 is disposed within the housing 10 in the heating chamber 17 disposed between the surface oi the truncated cone 12 and the cylindrical wall 10 of the housing. The heating element 16 has one end thereof secured to a terminal 18 and the other end secured to another terminal 19. These terminals 18 and 19 extend through the cylindrical wall 10 of the housing and are interposed in an electric circuit C which is connected to a battery or source o1 current supply B. If desired, a switch S may be interposed in this circuit C so that the heating element 16 can be turned on as may be desired. These terminais 18 and 19 are preferably insulated from the metal housing comprising the cylindrical wall 10 and the bottom 11 by means of insulators 2G and Q 21, respectively.

In the use of the vulcanizer hereinbefore described, the housing is adapted to have the concave bottom 11 thereof engaged with a patch P which is mounted on an inner tube or rubber element l T. The housing is held in tight engagement with the patch P by means of a conventional C-clamp 22. After the housing is tightened on top of the patch P, the terminals 18 and 19 can be connected to the battery B in any desired manner, as by conventional clips or other conventionall means. The heat generated by the heating element or coil 16 will heat the chamber 17 land the bottom 11 sufficiently to vulcanize the patch P on the tube T. It will be apparent from the foregoing that an exceedingly simple Vulcanizer i has been disclosed which can be used with a conventional 6-volt battery such as at present used in the operation of an internal combustion engine. By providing the nut 15 on the inside of the truncated cone 12, the nut 15 does not form a projection which will interfere with the clamping of the housing on the patch and at the same time, this nut 15 coacts with the truncated cone 12 in providing an annular heating chamber in.,- the housing about the heating element 16.

It is, of course, understood that various changes and modifications may be made in the details of construction and design of the above speciiically described embodiment of this in-I o Vention without departing from the spirit thereof, such changes and modiiications being restricted only by the scope of the following claims.

What is claimed isz- 1. A vulcanizer comprising a cylindrical hous- 1 ing, a concave bottom integral with the housing, internal threads in the housing, a truncated cone within the housing in inverted position, threads on the base of said cone engaging said internal threads, a heating chamber in the housing about the truncated cone, and a heating element in the heating chamber.

2. A vulcanizer comprising a housing open at one end and provided at the other end with a bottom concave on the outer surface, internal threads in the housing, an inverted truncated cone in the housing, an annular iiange carried by the base of said cone, threads on said flange engaging said internal threads, and a heating element disposed in the housing about the apex of said cone and adjacent the bottom.

3. A vulcanizer comprising a cylindrical housing open at one end and closed at the other end, said other end having a concave outer surface, internal threads in the housing, an in- Verted truncated cone within the housing, an annular flange integral with the base of the cone, threads on the iiange engaging said internal threads, a nut member integral With the apex of the cone and adapted to be engaged from Within the cone, a heating chamber about the apex of the cone and said nut member, a heating coil, and a pair of terminals secured to the cylindrical Wall of the housing and connected to said coil.

4. A vulcanizer comprising a cylindrical housing open at one end and closed at the other end, said other end having a concave outer surface, a truncated cone disposed in the housing in inverted position, a nut member integral with the apex of the cone and disposed Within the housing, an annular iiange integral with the base of the cone, threads on the ange engaging said internal threads, a heating coil, a pair of terminals secured to said coil and extending outwardly through the cylindrical Wall of the housing, and means for insulating said terminals in the housing.

ALLAN C. RI-IOADES. 

